I really like Timelog from a UI and functionality and its completely central to my workflow.

The author was pretty attentive but has become less responsive in the last few months. I'm supposing this is because he has added other products to his portfolio and has become busy with them, especially Grandtotal (none of which I use).

I would be happy to pay more for Timelog, but my needs are starting to reach its limits.

This is one of those gems that you tend to stumble over from time to time. I've been using Timelog for 9 months now and thrown away the paper diary to track my time. I looked at other solutions, including rolling my own in FileMaker (and wrote my own in PHP) but this has everything I could ask for. The graphical interface for adjusting times is just brilliant. Support from the developer is also helpful and timely.

I am a freelance user interface designer and I charge my work per hour. I have always spent hours at the the end of month to make bills for all the projects.
I used to use MS Outlook for calendar and switching to Mac I found this iCal & TimeLog combination, which works just perfect for me. Simple and efficient, just enough to manage and track my work. Well worth the money spent on this utility.